<script>
document.addEventListener("touchstart", function(){}, true);
</script>

   div.button:hover, div.button:active {
    -webkit-tap-highlight-color: rgba(0,0,0,0);
    -webkit-user-select: none;
    -webkit-touch-callout: none
    }
     div.usl:hover, div.usl:active {
    -webkit-tap-highlight-color: rgba(0,0,0,0);
    -webkit-user-select: none;
    -webkit-touch-callout: none
    }